Bust 10 drug dealers

Practice self-control

Rescue 10 suspects from suspicion pens

Kill and loot 10 large animals (deer, boar, wolves).

Collect 5000 pieces of salvage.

Kill 75 enemies with the rifle.

Loot 200 enemies.

Perform 50 headshot kills in the single player campaign.

Force an enemy to drop dynamite that kills two people when exploding.

Find 25% of all documents.

Defeat a zombie.

Scaled all of the Tallnecks and accessed their information.

Reached player level 50.